Stereotype-printing-plate-casting apparatus.



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Attorneys.

1I., A. W. WOOD STPNPOTYPP PRINTING PLATE CASTING APPARATUS.

APPLIGAT'IONPILPD MAR. 4, 189s; N0 MODEL.

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W itnesses.

No. 721,118. A PATENTED FEB. 17, 1903. H. A. W. WOOD.

STEREOTYPE PRINTING PLATE CASTING APPARATUS.

APPLICATION FILED MAR, 4, 1898.

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Inventor.

HA, Wifi/00d v Q Attorneys.

UNITE@ STATES "PATENT Prien HENRYf-A-.- -WISE ViGGD, F N EW YORK, N. Y., ASSIGNOR ATO THE CAMPBELL` PRIN"y ING PRESS t MANUFACTURING -A CRPORATUN OF NEW YORK.

COMPANY, OF NEW YORK, N. Y.,

STRTYPEsPRINTiNGSPLATE-C ASTiNG APPARATUS. A

SPECIFATION forming' part of Letters Patent N o. 721,118, dated February 17, 1903.

vApplication filed March 4, 1898..

To ail; whom, it may concern:

. 'Beit known that l, HENRY A. Wien Woon,

acitizen-of' the UnitedA States, residing at New York, in the county of New York and State of-New York, have invented a new and useful Stereotype-Printing-PiateCasting Appal ratus,of which the following is a speeiicatien. My invention relates to an apparatus for casting stereotype printing-plates; and the xo object 'of my invention is to improve and simplify the' parts which cooperate t-o form the casting-chamber and to provide independent means for removing the liexible matrix Jfrom the surface of the-cast plate.

Tothese ends my invention consists of the parts and combinations ofparts,as hereinafter described, and more particularly pointed out in the claims at the end of this specification. In the accompanying -two sheets ofdrawzoy ings, Figure lis a transverse sectional view of an automatic plate-casting machine constructed according to my invention. Fig 2 is a similar view, the parts being shown in a different relative position. Fig. 3 is an end 254 view'of the machine, and Figs. 4 and 5 are detail views to behereinater referred to.

My present invention has been especially designed as an improvement or modication of the automaticplate casting and finishing 3o machine which is described in an application for Letters Patent filed bynie March e, 1898, Serial No. 672,5l9,-patented'ofeven date herewith. v

The machine which is illustrated in the accompanying drawings, which show one embodiment of my present invention, comprises a curved casting-chamber formed bythe an- A n'ular space between a core orvcyl-inder and a movable piece orsegment. The movable piece 4Q or segment is moved up and down to close and open the casting-chamber. A flexible matrix is mounted in independent strips or arms, and these strips or arms are actuated to strip the matrix from the surface of the cast platev when the casting chamber is opened. When the casting operation is completed, the central core or cylinder is turned to move the cast plate from the casting-chaml i,

'ber and to present the plate in pioper position to be acted upon by suitable lifting ani..

in the framework A are the drivin Serial 110.672,550. (No model.)

conveying devices, and the core or cylinder is then turned back to its original position before the next casting operation commences.

Referring tothe drawings and in detail, .A designates a rigid framework which supports the moving parts of the machine. Journaled .-shafts 10 and 1l and a pump-actuating shaft 12. These three shafts may be geared to turn together by any of the ordinary forms of gearing* 6o such, for instance, as is shown in my application, Serial No. 672,5i9-to make one turn for each casting operation and may be driven from the powershaft 13 in the ordinary Way.

At the rear of the machine isamelting-pot G, which is arranged over suitable heating devices or gas-jets, as g. Mounted in the melting-pot Gis a pumping mechanism for forcing the molten metal into the castingchamber. The pumping mechanism is actu- 7o ated by a cam 14, secured near the end of the shaft 12, and the molten metal is led into the casting-chamber through a spout or passage 15. The casting-chamber is formed by the annular space between the oscillating core or cylinder 16 and a movable segment or back piece 17. .lourn-aled on studs 20, carried by the movable piece or segment 17, are rollers 19, which bear on camslS, secured on the driving-shaft l0. The movable piece or seg- 8o ment 17 is guided to move up and down ver- 'iically by means of slotted yokes 2l, which tit over the shaft 10, and the said studs 20, which fit into slots 22 iu the framework of the machine. v

A flexible matrix m is secured at its edges in independent strips or arms 23 and 2li, the strips 23 and 24 being connected by spring bands or arms 25, as most clearly illustrated in Fig. 5. A stop-piece 250 is secured to the 9o arm 23 in position to stop off the side of the mold into which the spout does not enter. The strips or arms 23 and 24. are actuated by means independent of the movable segment or piece-17 to present the matrix in proper 95 position in the casting-chamber and to strip the matrix from the surface of the cast plates.'

As shown in Fig. 3, a cam 26 is secured near the end of the driving-shaft 1G and engages with a roller 27, journaled on a yoke 28,wl1ieh roo connects to an arm 29, extending down from a rock-shaft 30. The roller 27 maybe held in engagementI with its cam 2G by means of a spring 300. The rock-shaft 30 is provided with arms v31, which are connected by links 32 to the matrix-carrying arm or piece The rock-shaft 30 is also provided near its end with an arm 34, which is connected by' an adjustable link 35 with an arm 36, extending down from the rock-shaft. The rock-shaft 37 is providing with extendingarms 3S, which are connected to the matrix-carrying strip or arm 24 by means of links 39. In this construction it will be seen that the arms 3l and 38 and the connecting-links 32 and 39 form substantially toggle-levers, which will strip the flexible matrix evenly and eflcientlyfrom the surface ofthe cast plate,while at the same time the matrix will not be unnecessarily strained or stretched. 1f desired, the arms 3l and 3S may be provided with projecting lugs, as 33 and 40, which will form stops for holding the'mat-rix when in its lowered position. The said lugs 33 and 40 are arranged to strike on the links 32 or 39 when the casting-chamber is open, as shown in Fig. l, to accomplish this result.

Fig. 4 illustrates a form ot' gearing which I may employ for turning or oscillating the core or cylinder lli to remore the cast plate from the casting-chamber. Referring to the figure, 2 designates a cam, which is fastened to the driving-shaft 1l. The cam 42 engages with a roller 4.3, journaled on a yoke 44, which is connected to toothed sector 16, which is pivoted to frame A and which meshes with a gear or pinion 47, carried by the core or cylinder 16. 'A spring, as 45, may be connected to the yoke 44 and to the framework of the machine to hold the roller 43 in engagement with its cam 42. By means of this construction the core or cylinder I6 will be turned so that the plate will be presented in position to be engaged by suitable lifter-arms, as -IS and 49, which may be suitably actuated, as by the mechanism shown and described in my other application previously referred to, to forcibly raise the plate from the surface of the cylinder, or, if preferred, the lifter-arm 49 may be interposed below the rear edge of the plate, so that as the core is oscillated to return to its original position the plate will be left in position upon the lifter-arms. In this construction it will be observed that the same surface of the core is always employed to form part of the casting-chamber, and while I have illustrated a core which is substantially cylindrical in form, it is obvious that I may use any form ot core having a portion of its surface of cylindrical shape to form part of the casting-chamber.

`While the apparatus herein shown is au organized machine operated power,l it is obvious that my im provemenis ...in be employed in apparatus ormechanism nl ich is not driven by power without departing i. rom my claims.

I am aware that many other changes may be made by a skilled mechanic in my platecasting mechanism without departing from the scope of my invention as expressed in the claims, and I do not wish, therefore, to be limited to the construction which I have shown and described; but

What I do\claim, and desire to secure by Letters Patent of the United States, is-

I. In an apparatus for casting curved stereotype printing-plates from a ilexible matrix, the combination of acore and segmental back, the annular space between the two forming a casting-chamber, and means independent of said back for strippingr the flexible matrix from the convex ty pe-surface of the cast plate.

2. In an apparatus for casting curved stereotype printing-plates from a iiexible matrix, the combination of a core and a segmental back, the space between the two forming an annular casting-chamber, means for directing molten metal into said casting-chamber, and means independent of said back for stripping the flexible matrix from the convex typesurface of the cast plate.

In an apparatus for casting curved stereotype printing-plates from a flexible matrix, the. combination of a core and segmental back, the space between the two forming an annular casting-chamber, means independent of said back for stripping the flexible matrix from the convex type surface of the cast plate, and means for removing the cast plate from the casting-chamber.

4.. In an apparatus for casting curved stereotype printing-plates from a flexible matrix, the combination of score and segmental back, the space between the two forming an annular casting-chamber, means independent of saidback forcarrying a flexible matrix, and operating connections for this means to strip the matrix from the convex type-surface of the cast plate, and to restore the matrix to casting position.

5. In an apparatus for casting curved stereotype printing-plates from a flexible matrix, the combination of a core and segmental back, the space between the two forming an annular casting-chamber, means for opening and olosin g the casting-chamber, means independent of said back for carrying a flexible matrix, and mechanism for operating this means to strip the matrix from ythe convex type-surface of the cast plate.

6. In an apparatus for casting curved stereotype printing-plates, from a flexible matrix, the combination of an annular casting-chamber formed by the space between a core and a segmental back, means for moving said segmental baclr, and means for oscillating said core.

7. In an apparatus for casting curved stereotype printing-plates from a fiexible matrix, the combination of an annular casting-chamber formed by the space between a core and segmental back, means for moving said segmental back to open and close the castingchamber, independent means for stripping,r

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the matrix trom `the convex type-surface of the cast plate and means for oscillating said core.

S. A stereotype-printing-plate-casting apparatus for casting stereotype printing-plates from a llexible matrix, comprising a framework, a core and a segmental back, the annular space between the core and back forming a casting chamber, and matrix carrying means connected to the apparatus independent-ly of the back to which the matrix is secured so that the matrix can be flexed from the surface 'of the cast plate and then restored to position and shape in the casting-chamber without disconnecting said matrix-carrying means from the apparatus or the matrix from the carrying means.

9. in a stereotype-printingplate-casting apparatus, the combination of an vaxiallyjournaled core, a segment, means for moving said segment away from the core to open the casting-chamber, and mechanism for oscillating said core about its axis to deliver the plate.

10.l ln a stereotype-printing-plate-casting apparatus, the combination of an axiallyjournaled core, a cooperating segment, means for moving said segment to open and close the casting-chamber, matrix-carrying means for supporting said matrix in position, and means for oscillating said core about its axis to deliver the lcasi: plate from the castingchamber.

11. In a stereotype-printing-plate-casting mechanism, the combination of the core and segmental back, the space between the two forming an annular casting-chamber, means for supporting a matrixin position therein, means for raising and lowering the segmental back to open and close the chamber, and means for oscillating the core to deliver the cast plate when the chamber is opened and to return the core toits castingposition when the chamber1 is closed.

12. In a stereotype-prinling-plate-casting mechanism, the combination of the core and segmental back, the annular space between the two forming a casting-chamber, means independent of the core and segmental back for supporting a matrix in position and for stripping the same from the convex type-surface of the cast plate, means for opening and closing the chamber, and means for delivering the cast plate.

13. ln a stereotype-printing-plate-casting mechanism, the combination of the core and segmental back, the annular space 'between the two forming a casting-chamber, means for opening and closing the chamber, and means independent of the segmental back for stripping the matrix from the surface of the cast plate, and'for returning the matrix to its casting position.

14. The combination in a stereotype-printing-plate-casting mechanism of the framework, the core and segmental back, the annular space between the two forming a casting-chamber, means for opening and closing the casting-chamber, and means attached to the framework for holding the matrix in position in the casting-chamber and for stripping the same from the convex type-surface of the cast plate.

15. The combination in a stereotype-printing-plate-casting mechanism, of a core having a cylindrical surface and journaled in line with the axis of said cylindrical surface,l a segmental back, a cam, and connections therefrom to the core to oscillate the same about said axis to deliver the plate.

16. The combination in a stereotype-printing-plate-casting mechanism of the core and a one-piece segmental back, the annular space between the two forming a casting-chamber, operating-cams, and connections therefrom to the segmental back to move the same bodily away from and toward the c ore to open and close the casting-chamber. y

17. The combination in a stereotype-printing-plate-casting mechanism, of the core and segmental back, the annular space between the two forming a casting-chamber, a cam and connections therefrom to the core to os/ cillate the core to deliver the plate from the casting-chamber, and cams and connections therefrom to raise and lower the segmental back to open and close the casting-chamber.

18. The combination in a stereotype-printing-plate-casting mechanism, of an axiallyjournaled cylindrical core, a segmental back, a gear mounted on the core, a pivoted toothed segment meshing therewith, a cam, and connections therefrom to the segment.

19. The combination in a stereotype-printing-plate-casting-mechanism, of a core and segmental back, means for opening and closing the casting chamber formed between these parts, shafts 30 and 37 carrying matrixsupporting means', and mechanism for oseillating said shafts.

20. The combination in a stereotype-printng-plate-casting mechanism, of a core and segmental back, means for opening and clesing 'the casting chamber formed between these parts, shafts 30 and 37, matrix-supporting means carried thereby, means for oscillating the shaft 30, and connections from the shaft 30 to the shaft 37 so that the latter will oscillate oppositely to the shaft 30.

21. The combination in a stereotype-printling-plate-casting mechanism, of a core and segmental back, shafts 30 and 37 having matrix-supporting means, cam 26 connected to actuatetheshaft 30, levers 34 and 36 on said shafts, and connecting-link 85 between said levers.

In testimony whereof l have hereunto set my hand in the presence of two subscribing witnesses.

H. A. WISE VOOI).

Witnesses:

HENRY W. COZZEN, .l r., LOUIS W. SoUTI-IGA-rn.

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